Which play, written by Jack Thorne from an original story by J.K. Rowling, premiered in London in 2016?

Harry Potter and the Cursed Child premiered in London in 2016.

The stage play was written by Jack Thorne, directed by John Tiffany, and based on an original story by Thorne, Tiffany, and J.K. Rowling. Its official title is Harry Potter and the Cursed Child. The story is set nineteen years after the events of Harry Potter and the Deathly Hallows and follows the adult Harry as well as his son Albus Severus Potter.

The original production began previews at the Palace Theatre in London in June 2016 and officially opened on 30 July 2016. The script was published as a book on 31 July 2016, Harry Potter’s and Rowling’s shared fictional birthday.

Cursed Child is a play, not an eighth prose novel by Rowling. Its story expands the Wizarding World through live performance, stage illusion, and a new generation of characters. Productions later opened in other cities, including New York, Melbourne, and San Francisco.